Combination lock for pen and pencil safes



G. W GREEN COMBINATION LOCK FOR PEN AND PENCIL SAFES Dec. ll 1925.

Attorney.

Patented Dec. 1, 1925.

GEORGE W. GREEN, or BEAUMONT, CALIFORNIA.

COMBINATION LOCK FOR PEN AND PENCIL SAFES.

Application filed September 1, 1923. Serial No. 666,659.

To all whom it. may concer/n.:

Be `it known that I, GEORGE W; GREEN, a citizen of the United States, residing at Beaumont, in the county of Riverside and State of California, have invented a new and useful Combination Lock for Pen and Pencil Safes, of which the following is a specification.

, My invention relates yto locking receptaclesfor pens and pencils and particularly to such as are fitted with tubular combination locks.f Among the objects of my invention.y are, first, to provide a device of this nature that is relatively inexpensive and suitable for the use of school childrenas a desk Xture; second, to furnish a simple and effective combination locking means that is not likely to become deranged in such service; and, third, to afford facilities for assembling the device in such a manner that it can not be taken apart or tampered with when closed andlocked. f Other objects and advantagees will appear hereinafter, and while I show herewith and will describe a preferred form ofv construction, I desire to fbe understood that I do not limit myself to such preferred form, since various Ychanges and adaptations may be made therein without departing from the spirit of my invention as Vhereinafter claimed.;

VMy objects are attained by the construction illustrated in the accompanying drawing, in which- Figurev 1 is a side elevation ofthe complete device in closed and locked position Figure2 is a vertical longitudinal section through the center, drawn to a larger scale; and', y

Figures 3, 4, 5, and 6 respectively are cross sections taken on the line 3-3, 4 4, etc. of Fig. 2, looking'in the direction indicated by the arrows. These cross sections are drawn on the same scale as Fig. 1. .f

Similar reference numerals refer to similar parts throughout the several views.v

The'device, as herein depicted, comprisesv nnlarrim 8 at one'end. The other end is the lock bar 15 may be slid into it. `periphery of this member, adjacent Vthe either be outside, asl shown, or inside the larger constitutes a receptacle for pens, pencils and similar articles. Partition 11 is permanently fixed within body 7 in any convenient manner as by sweating.

`The upper half of the receptacle portion of the body is cut away, as at 12, to form an elongated rectangular aperture for access to` its interior, and a similarly. cut yaway tubular cover member 13 is adapted tov rotate within the receptacle to act as a closure `for the same. Cover 13is conveniently rotated when desired by the handle 14.

Cover 13 may be locked in closed posi-` tion, as here depicted, yby lock bar 15;V The latter is slidable longitudinally and is adapted to engage a notch at x16 in the end of the cover. ,The lock bar works in a -radial notch in partition 11, and is conveniently operated by ahandle 17,projecting through a slot 18 in the tubular body.

The lockingk mechanism is wholly assembled by meansofan axial bolt 19, shoul dered at 20 against partition 11, and rigidly attached thereto by the nuts 2l. All of the rotating parts of the locking mechanism revolve about this bolt as an axis.

The inner cylinder22 isv mounted directly upon bolt 19. It is formed with a knurled head 23 having a deep annular groove 24 forming an annular rim 25, of the same size and opposed to rim 8 on the end of the body. At theother end of this cylinder is a longitudinal notch 26, of such proportions that On the knurling, as at 27 is marked the numbers by whichthe combination is worked, the settings being made with the aid of a fiXed point such asrthe indicatingfinger 28 attached to the body. i The tubular intermediate ycylinder 29 is Vfreely rotatableupon the inner cylinder, and

within annular groove 24. 'It is formed with a notch v'30, atjone end, adapted to receivev the lock bar, and With a series of longitudinal slots- 31,intermediate its ends, as', indicatedcin Fig.f5. A resilientfbandBQ, With a flanged end and of such length as not to completely encircle this; cylinder, is4 snapped on to the latter with the yend flange engaging one of the slots 3l.V rEheselectionof this slot determines one of the figures of the lock combination, and all v,of the slots are covered by the band.

'A tubular outer cylinder=33 is freely rotatable upon the'intermediate cylinder. lt has a notch 34 for the-lock bar at one end, and the other end is slotted as at 35,- infllig.

5, and -providedrwith a 'resilient end-flanged band 36 similar to that previously described, and forl a corresponding purpose. The selection of the slot to be used for/band 86 i determines another ligureof the lock combias shown injFig.I v2.y

nation and,asibefore, all'V ofthe slots in this f endk ofthe cylinder a'recovered by this` band.

Looselysurrounding-the outer cylinder is a resilientband 37: Wi'thits ends 38proj'ecting through a slot in the tubularbody of the device. This bandj'is adapted to 'act as a lbralreup'on the outer cylinder'by-compressing the ends 38 together.

rlhe tubularbodyis again slotted at 39 for the accommodation vof `the tivo light pawls40 and 41 pivoted, by the pin 42 as shown in` Figa 2; These paivl's respectively are adapted to engagetheplain ends of-ban'ds 36 and 32-aiidk thereby prevent the outer and intermediatecylinders from revolving counter-clockwise. Bavvl 40 yis .provi-ded lwith a side lug 43 A .extendingcbeneathi pawl 4l softhat the latter cannot'A drop to enga-ge itsband on the intermedi-ate,cylinder until paivl 40 ,hasse dropped and engaged the mediate cylinder by movingcollarfl lon- `gitudinally toward or. away from ,the 'body of the device, the former caseithe intermediate cylinder `will kbe .prevented from tu rning. In tlieflatter case the intermediate cylinder uvillbeconstrained to rotatewhen -knurled head" 231 is turned;

It Willbe evident fromthe foregoingzthat Vthe three cylinders mayv assume any angular position with respect to each other.A Before the dialing ofthe combination is started therefore, the cylinders mustgbe brought into proper angular relation 'for VWorking the combination.' This is doneby moving tion is reached.

collai` tothe right and turning knurled head 23L backward (counter-clockwise) until paavls 40 and- 4l have dropped@ and engaged,

respectively, the outer and intermediate cylinders, ,and further, after moving collar 45 to its neutral position, until pointer 28 is opposite the starting number of the combination. The dialing is then proceeded i with. kas Af follows 'figure of the coinbinati'onhas been reached. 1Notch34 of they OuterA cylinder will then be in registry' with the loc'lr bar.

Second, compress brake handles 3S to hold the outer cylinderv in this position, and contiiiue to turn head 23 to the right until the 3rd `figure off. Vthe combination lhas been reached. lNotch 30 ivilhtlien befin registry with Vthe Vloclrbar.

Third,vmove.collar45tothe left, to hold the intermediate cylinder inthis position, and turn head' 23 either to the right or left untilthetth andrfinal i'gureof the combina- NotchQ will; then be in registry withthe loclrbanand handle 1T may belinoved to the right to slide lock bar Vl5 into all;` three of the cylinder notches, and

thus release the cover.

It Will'be understood that, although it has beenstated that' intermediate cylinder 29'is freely rotatableupon'the inner cylinder, and` that outei-cyl'ind`er 33 is freely rotatable upon the-intermediate cylinder, the three cylinders in reality are in fric- 'tional engagement'. Tliisis due to the fact that the cylinders are fairly accurately Vfitted to-eacli-other-Withtheir surfaces in contact, and to the-further yfact that the weight orftheintermediate and outer cylinders respectively is partially or Wholly supported by the inner end ofthe inner cylin- 'den Rotation ofthe latter-tl'ieiefore serves to Arotate the others, unless they are prevented from turning in the manner described.

I particularly desire to emphasize the'vfact inentionedgabovethat bolt 19, andl nuts-2l, maintain the assembly of the lockingineehanism, andthat the nuts arejlocated Within 'the lockable Vchamber of the device so that they cannot be tampered with when the device is locked. Ij prefer lto make vbolt 19 with a roundedcountersunlr head as shown, l

since this precludes the u selofy awrench and discourages'tampering; but the bolt in any event could not be removed bythe-mere use of a wrench on its head, in view ofthe lock nuts used at its inner lend.

I'claini as my iiiyention:

1. A device of' the character described comprising; a longitudinally slidable locking bar concentriclocking-members in frictionalengagement and having notches adapted to receive said bar; external means for rotating one of the members for thereby bringing the notches oiany of said members into registry With said bar; and clutch means for severally holding said members so registered.

2. Ay device of the character described comprising; a tubular shell; a longitudinally slidable locking bar Within the shell; concentric tubular locking members in frictional engagement, Within the shell, and having end notches adapted to receive said bar; external means tor rotating the innermost member for thereby bringing the notches of any of said members into registry with said bar; and clutch means for severally holding said members so registered.

3. A device of the character described comprising; an integralitubular casinghaving one open end and a lateral-aperture aiording access to its interior; a rotatable closure for said aperture within said casing; a locking mechanism for said closure lling the open end of the casing; and a coaxial bolt adapted to elect the assembly oi said casingl and locking mechanism; said bolt being secured Within the casing by means that are completely inaccessible When said closure is locked.

4. A device of the character described comprising; Ian integral tubular casing having one open end and an elongated lateral aperture affording access to its interior; a rotatable closure for said aperture Within said casing adapted 'for being locked in closed position; a locking mechanism for said closure filling the open end of the casing and comprising n concentric rotatable locking members in frictional engagement adapted for operation by means external to the casing; and a co-axial bolt effecting the assembly of said casing and locking mechanism; said bolt being Vsecured Within the casing by a nut that is completely inaccessible When said closure is locked.

5. A device of the character described comprising; an integral tubular casing having one open end and an elongated lateral aperture affording access to its interior; a rotatable closure for said aperture Within the casing having an end notch whereby it may be locked in closed position; a locking bar adapted to engage said notch by longitudinal sliding; a locking mechanism filling the open end of the casing and comprising concentric rotatable locking members in frictional engagement and having end notches adapted to register and to receive said locking bar; means external to the casing for rotating said members; and a coaxial bolt effecting the assembly of said casing and locking mechanism; said bolt being secured Within the casing by a nut that is completely inaccessible when said closure is rality of nested cylinders with end notches therein; a locking bar adapted Vfor entering said notches; means for rotating said cylinders to bring said notches into registry With said bar; dial means Jfor determining When said notches are in registry With said bar;`

and clutch means for severally maintainingV said registrations; said cylinders being assembled Within the device by a Ybolt secured by lock nuts that are totally enclosed Wheny the device is locked.

8. A device of the character described comprising; locking means consisting of a slidable bar and a `plurality of independent nested cylinders infrictional engagement, and having end notches adapted to receive said bar; means for lirst bringing said cylinders into pre-determined angular relations, and for subsequently turning each cylinder through a pre-determined angle to bring its notches into registry With said bar; and clutch means for severally holding said members so registered.

9. In a device of the character described, means for changing the dial combination comprising; locking cylinders having a plurality of circumferentially arranged-deformations on their peripheries; circumferentially incomplete resilient bands respectively covering and selectively engaging said deformations; and paWls pivoted to a nonrotatable portion of the device respectively adapted to engage the ends of said bands Y for angularly positioning the cylinders.

10. In a device of the character described, means for changing the dial combination comprising; locking cylinders having a plurality ory circumferentially arranged longitudinal slots in their peripheries; circumferentially incomplete resilient bands respectively covering Vsaid slots and selectively engaging them by means of flanged ends on the bands; and paWls pivoted to a nonrotatable portion of the device respectively adapted to engage the plain ends of said bands for. angularly positioning the cylinders. Y

' GEORGE lV. GREEN. 

